I don't have a list. But I think Kubiak is too conservative at times and that he really hasn't gotten much better than when he was in Minnesota as the OC. I thought then he may have been overly conservative because of Zimmer, and maybe DA is the reason he has been overly conservative here, but like I said, he can prove me wrong the rest of the year.
Regardless, what would be stupid is to force a new HC to keep a\the current OC. You let them pick their own OC. Telling candidates that they have to keep the OC would be the dumb thing because no decent coach is going to take the job with that condition. If you hire a guy and he wants to keep Kubiak, great. But you don't force that on a HC.
But, if you really want to keep the Shanahan/Kubiak system, there are lots of other guys out there that run that offense. So it's not like you have to start over.